/Engine/Plugins/Importers/USDImporter/Source/USDStage/Public/USDStageActor.h
Unlike PostEditUndo (which is called for any object in the transaction), this is only called on objects that are actually changed by the transaction.
virtual void PostTransacted ( const [FTransactionObjectEvent](API\Runtime\CoreUObject\Misc\FTransactionObjectEvent) & TransactionEvent )